Razor-blade guard and face plate



H. S. HASSELQUIST. RAZOR BLADE GUARD AND FACE PLATE.

APPLICATION FILED MAR. 15V, 1920.

Patented May 16, 1922.

UNITED srArEs PATENT OFFICE.

HUGO s. IIAssELQUIsT, or OAKIARK, ILLINoIs, AssIGNoIt, BY MESNI: ASSIGNMENTS, 'rocAP B. COLLINS, or OAK PARK, ILLINOIS.

l To all whomfit may concern: Be it known that I, HUGO S. IIAssELQUIs'r,

acitizen of the United States, residing at Oak Park, in the-countyS of Cook and State g lowing is 'a specification.

of Illinois, have invented certain new and ,useful Improvements in Razor-Blade Guards and Face Plates, of which the fol-4 My invention concerns novel features of construction in razors, but pertains more particularlyto'the guard and face-plate associated lwith a revoluble, round, sharpedged', disc razor-blade to protect and shield the face ofl the userfrom an undue cutting action of the'- blade, the relative positions of the guard and` face-plate determining the degree of exposure and denpth or extent of cut of the edge of the razor-blade. The improved -,construction is especially adapted, though not restrictedly, for advantageous employment with a rotary-razor having a hollow handle containing a spring-motor by means ofwhich. the blade is revolved during use.

It, has heretofore been proposed to employ round toothed guards for such razors, the vconstruction permitting of ready adjustment ofi the guard toward and from the blade edgeto determine or4 fix the closeness of the shave. -I have found, however, that such a structure mayFbe improved to. advantage by `giving the guard a smooth or unserrated or uhto'othed edge, and the employment ofsuch an improved style of guard facilitates the shaving operation 4because there are no radially-directed teeth or projections pointing or extending in different directions to act on the hairs.

In association and co-operation with such guard I employ a round',- convex, circularlycorrugated, sheet-metal disc or face-plate, over the blade and secure it to a fixed or 4stationary mounting. IIeretofore,` it has been suggested to use a smooth, convex,

face-plate inthe same position, but eil:- perience has shown that such a plate 1s i likely to adhere or ft too closely to the face of the user and to create more orl less of an objectionable and detrimental. suction action tending in small degree at least, to cause the skin of the .user to follow the course of travel o f the razor. Stated somewhat otherwise, a' rotary razor equipped with such a smooth face-plate is inclined to adhere to the face ofthe user and to retard the smooth and in position on the element 11`by' a perforated Speciication of Letters Patent. i Patnted May 16, 1922.-

Application led March 15,

y1920. Serial No. 365,725.

f hering action. The employment of the new .face-plate with the guard of the type described, facilitates the easy and proper action of the razor and does away with the disadvantages of the older types `of construction.

`To enable those skilled in this art to have a full and complete understanding of the invention and its several advantages, I have ,illustrated a preferred and desirable em-.

bodiment'of the same in the accompanying drawing to which reference-should be had in connection with thel following detailed description of the construction and Inode-of operation of the razor-structure Vdepicted vin such drawing: Y

In this drawing :v J Figure l is a fragmentary, central, vertical section through a-rotaryrazor structure eruipped with the'improved guard and face-p ate; and

Figure 2 is a plan view of such face-plate. Referring to the drawing, it will `he seen that the round, sharp-edged, disc razor-blade 10 is mounted on a supporting-plate l1 resting on afcircular flange 12 forming part of a sleeve 13 fitted over the upper end of andl rotated by a revoluble sleeve 14 operated' by the spring-motor (not shown) contained in the pear-shaped handle of the razor (not illustrated). The blade 10 is zsecurely held clamp-plate 15 bearing against its upper face and provided with a hollow, externally-v screw-threaded, hub portion 16 screwedjinto the upper internally-threaded part .of vthe rotary sleeve 13. It will be perceived, therefore, that by fully screwing home the plate 100 15, the blade 10 may be firmly clamped or secured between the companion co-operating elements 11 and 15.

Inside of the sleeves 13 and 14 -there is aA stationary post or standard 17 having a-105 screw-threaded cavity 18 inits upper end into which'is screwed the threaded stem 19 of a supporting block 20 provided at. its

upper or outer end with a central cavity 21.

A. round, slightly-convex, circularly-corru- 110 gated face-plate 22 is soldered or otherwise secured to the element 20, the recess 21 accommodating a central, depressed, centering boss 23 of the face-plate, all as is clearly illustrated in Figure 1. Such face-plate is stationary during the operation of the razor and its round or circular ledge is spaced away slightly from the adjacent face of the revolving disc-blade 10, the position of the plate being determined by a shoulder of block 2O bearing on the end of post 17.

In order to facilitate the attachment of the inner or under surface of such face-plate to the supporting member 20, that part of the face-plate surrounding the centralL boss 23 is flat at 24 which permits it to be readily soldered or otherwise. secured to the correspondingly-shaped outer surface of the element 20.

The appliance includes additionally a stationary, hollow, cylindrical post 25 having an externally screw-threaded part 26 provided With a lengthwise groove or key-way 27 and also having an outstanding, circular rib or flange 28 affording a shoulder 29. The handle ofthe razor comprises in part a sheetmetal shell or casing element 30 with an inturned flange or circular lip 31 adapted to bear against the shoulder 29 on which it is pressed and against which it is firmly held by a retaining nut 32 screwed on to the threaded art 26 of the stationary post.

Interna ly such hollow post 25 accommodates the means for rotating the, revoluble blade and the means for supporting the stationary corrugated face-plate, all as is clearly shown.

A round, smooth-edged blade-guard 33 of the 4shape in cross-section, as fully illustrated in Figure l, is soldered or otherwise firmly fixed to a flanged ring support 34 mounted to slide longitudinally on the screw- 'i threaded part 26 provided with a lengthwise groove or key-way 27 and also having an outstanding, circular rib or liange 28 affording a shoulder 29. The handle for the razor comprises in part a sheet-metal shell or casing 'element 30 with an inturned flange or circular lip 31 adapted to bear against the shoulder 29 on which it is pressed and against which it is firmly held by a retainingnut 32 screwed on to the threaded part 26 of the stationary post.

A threaded retaining collar 36 is screwed on to 'the end of the post 25, and positioned between it and the guard support 34 I Vemploy a leaf-spring disc 37 having pressed upwardly out of its plane a plurality of curved resilient leaves or strips 38, in the present instance three. By this spring construction the blade-guard and itssupporting ring are yieldinglypressed downwardly or away from the razor-blade.

A portion of the element or member 34 is externally screw-threaded as shown, and fitted on such part is an internally-threaded adjustment-sleeve 39 bearing at one end on the face of the adj acent clamp-nut 32. This sleeve has fixed to it, as by soldering or otherwise, a 'suitably-shaped' knurled or roughened` cover-member 40 desirably of a width to shield and cover the elements 32 and 39 and a portion of the member 30, all as is clearly shown in the drawing.

It will be understood, therefore, that the support for the razor-blade guard is retained between the spring element 37 and the clamp-nut 32 and owing to the clearance spaces between the parts 32 and 34 and 39 and 33, turning of the sleeve 39 by its cover element 40 may be employed to effect the desired adjustment of the round blade'- guard.

Thus in this device we have improved and novel means on both sides of the edge of the blade, the one element being the smoothedged guard and the other or companion member being the corrugated face-plate, to facilitate the proper and edective and efficient use of the razor.

Those skilled in this art will discern that without departure from the substance and essence of the invention, various minor mechanical changes .may be incorporated in the structure, the invention not being limited to the details of construction shown and described.

I claim:

1. In a razor constructionof the character described, the combination of a round disc razor-blade, a corrugated convex face-plate over said blade, a stationary mounting for said face-plate, and a round smooth-edge guard of a larger diameter than and concentric with said blade, substantially as described.

2. In a rotary-razor construction of the character described, the combination of a rotary round disc razor-blade, a corrugated convex sheet-metal face-plate over said blade, and a stationary mounting for said face-plate, substantially as described.

3. In a rotaryrazor construction of the character described, the combination of a rotary round disc sharp-edged razor-blade, a round smooth-edge guard of larger diameter than and concentric with said blade, a round, circularly-corrugated, convex, sheetmetal face-plate over said blade, and a stationary mounting for said face-plate, substantially as described.

, HUGO S. HASSELQUIST. 

